ASTROSAT CZTI

Data Quality Report

Orbit 55963

Creation date: 2026-02-06T00:43:40.670858
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_066T02_9000006546_55963cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55963cztM0_level2_quad_clean.evt
Size (bytes)1,352,393,280258,845,760
Size1.3 GB 246.9 MB
Events in quadrant A10,399,1941,722,820
Events in quadrant B9,964,2671,828,298
Events in quadrant C10,166,9101,666,240
Events in quadrant D18,039,1431,293,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448512
B0437672
C0454443
D0670152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192616203.218940%
B192616763.509683%
C192614452.310368%
D19261331617.216136%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 20161 19263 284 284 1.41% 1.47%
B 20161 19263 207 207 1.03% 1.07%
C 20161 19263 316 316 1.57% 1.64%
D 20161 19263 3143 3143 15.59% 16.32%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 64 1620184 3208.55 2047 1993 504.3
A 0 8 513748 1014.71 2047 1993 504.3
A 4 3 147590 288.69 2047 1993 504.3
B 2 249 1123851 2605.44 2017 1941 430.6
B 0 199 342104 789.97 2017 1941 430.6
B 0 213 109769 250.41 2017 1941 430.6
C 1 29 1138843 2108.87 1987 1967 539.1
C 2 12 503019 929.43 1987 1967 539.1
C 15 199 219788 404.05 1987 1967 539.1
D 11 129 10001511 19604.49 1811 1735 510.1
D 7 129 176986 343.58 1811 1735 510.1
D 2 172 174030 337.78 1811 1735 510.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter